Keywords: California Interstate and State Route 238.svg Interstate 238 and California State Route 238 in California ” in the East San Francisco Bay Area With unbuilt sections shown in purple Email me if you would like a copy of the GIS data I created for the highways User NE2 Sources http //www bts gov/publications/north_american_transportation_atlas_data/ BTS North American Transportation Atlas Data http //www dot ca gov/hq/traffops/trucks/truckmap/truck-route-list xls Caltrans State Truck Route List XLS file http //www dot ca gov/hq/structur/strmaint/brlog2 htm Caltrans Log of Bridges on State Highways http //traffic-counts dot ca gov/ All Caltrans Traffic Volumes on CSHS http //www leginfo ca gov/cgi-bin/displaycode section shc group 00001-01000 file 300-635 California State Legislature Definitions of Routes Interstate 238 01 California State Route 238 01 Road maps of state highways in California 238 Maps of Alameda County California Transport in Hayward California ¢ Castro Valley California ¢ Fremont California ¢ Union City California ¢ |